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Changsha Tianhe Drilling Tools and Machinery Co., Ltd.，which located in Hanpu Scientific and Educational Park, Yuelu section, Changsha city, is a plant and professional geotechnical drilling factory specializing in the production, management, research, and sales of drilling tools. With more than 45,000 square meters modern workshop, 40 research and development specialists who have over twenty years of experience in DTH drilling tools, 150 skilled machining workers, the company shows the great advantage in design and research. It can provide the integrated solutions to the drilling tools users all over the world. Now, the equipments of the company are all numerical controlled. CNC lathes, milling machines, grinders and other advanced machining equipments greatly increase the accuracy of the products; Well furnaces with diameter of 2.5 meters, box furnaces with 1.5 ton capacity and other heat treatment equipments ensure the reliability; ultrasonic flaw detector and other international perfect testing equipments strengthen the good quality. As a council unit of China Drilling Steel and Drilling Tools Association, the company guide themselves with the service concept "focus on user’s requirements and meet to customer’s needs " , flexibly apply the unique technology, strictly comply with the standards of ISO9001 quality system, professionally commit to research, development and application, and sincerely produce the rock drilling tools with most specifications, easy operation, reliable quality and good prices for all the global users.